Origin Certificate issuance requires a producer sworn declaration and supporting documents, with government issuance and recordkeeping obligations. Final producers or exporters must submit a commercial invoice and a sworn producer declaration with supporting documents certifying that goods meet origin criteria, specifying exporter identity, domicile, product description and tariff classification, FOB value, detailed origin and non origin inputs with tariff classifications and CIF values, input percentages and manufacturing process. Origin Certificates must match invoice and declaration descriptions, be issued and signed by designated or delegated government offices within the administrative timeframe, cannot precede the invoice date, have limited validity with possible extension under suspensive regimes, and require retention, sequential numbering and a permanent register of issued certificates.